ASTROSAT CZTI

Data Quality Report

Orbit 35143

Creation date: 2022-03-29T16:31:13.511371
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_037T01_9000005030_35143cztM0_level2.evt modeM0/AS1A11_037T01_9000005030_35143cztM0_level2_quad_clean.evt
Size (bytes)736,928,640100,739,520
Size702.8 MB 96.1 MB
Events in quadrant A9,478,660559,573
Events in quadrant B3,286,541734,569
Events in quadrant C3,130,656719,064
Events in quadrant D6,060,361660,627

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318943
B0131242
C0126752
D0218912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5363278851.985829%
B53631362.535894%
C5363791.473056%
D53633316.171919%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7157 5364 1959 1959 27.37% 36.52%
B 7157 5364 74 74 1.03% 1.38%
C 7157 5364 54 54 0.75% 1.01%
D 7157 5364 326 326 4.55% 6.08%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 169 7217178 69308.37 527 518 104.1
A 15 174 128348 1227.67 527 518 104.1
A 10 83 81085 773.76 527 518 104.1
B 5 172 531565 4372.07 638 622 121.4
B 4 232 72113 588.69 638 622 121.4
B 5 236 70966 579.25 638 622 121.4
C 15 214 226403 1570.52 625 628 143.8
C 0 10 195037 1352.34 625 628 143.8
C 9 187 117396 812.25 625 628 143.8
D 8 195 2258422 14929.14 621 604 151.2
D 10 203 335331 2213.28 621 604 151.2
D 13 249 251040 1655.93 621 604 151.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter